Problem with input C-type string

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C++

char s1[1024], s2[1024];
cin.get(s1, 1024);
cin.get();
cin.get(s2, 1024);

When I input s1 an empty string by press Enter, the program ends immediately and I have no chance to input s2. Why??? I think cin.get() has already eaten the Enter character '\n'.